Refactor color management and UI components for consistency

- Updated color references in various widgets to use the new `opaquePrimary` color for better visual consistency.
- Refactored `ColorsManager` to improve color definitions and removed redundant color declarations.
- Enhanced UI elements across multiple dialogs and widgets to ensure a cohesive design language.

This change promotes maintainability and aligns with the updated color scheme.

lib/pages/space_management_v2/main_module/shared/widgets/community_dialog.dart

@@ -50,7 +50,7 @@ class _CommunityDialogState extends State<CommunityDialog> {
         width: MediaQuery.of(context).size.width * 0.3,
         padding: const EdgeInsets.all(20),
         decoration: BoxDecoration(
-          color: ColorsManager.whiteColors,
+          color: ColorsManager.white,
           borderRadius: BorderRadius.circular(20),
           boxShadow: [
             BoxShadow(
@@ -110,7 +110,7 @@ class _CommunityDialogState extends State<CommunityDialog> {
           }
         },
         borderRadius: 10,
-        foregroundColor: ColorsManager.whiteColors,
+        foregroundColor: ColorsManager.white,
         child: const Text('OK'),
       ),
     );